. >>> the first troops to leave afghanistan as part of the u.s. drawdown have handed over their security responsibilities to afghan forces. the 650 members of the iowa national guard's first squadron, 113th cavalry regiment are on their way home now. they completed 3,800 combat missions and trained 400 afghan police officers. president obama announced last month that he would pull 10,000 u.s. troops out of afghanistan in 2011, and the remaining 23,000 by next summer. >>> today, members of congress will join family members who lost loved ones in the 9/11 attacks. they will help stitch together an american flag that became tattered and worn following the september 11th attacks. the flag once hung at the construction site overlooking ground zero. it has since traveled the country getting one stitch after another in all 50 states. once finished, the flag will language in the national 9/11 memorial museum that is now under construction at ground zero. >>> some members of congress are now calling for an investigation here in the united states. this move